Canton

Solar battery in Aargau

A battery does not earn the same everywhere: it earns the gap between what you pay for electricity and what you are paid for your surplus. In Aargau, that gap is 22.15 ct.

What a kilowatt-hour is worth when kept rather than fed back

You pay the grid 30.15 ct

You are paid for your surplus − 8 ct

Difference — the real value of storage 22.15 ct

This is the most common mistake in the calculation: a stored kilowatt-hour is not worth the price of electricity. It would have been fed back and paid for. Its value is the difference between the two — and nothing else.

ElCom standard H4 household tariff, VAT included, tariff year 2026. The feed-in tariff is that of the grid operator serving the location.

What a 5 kWh battery changes in Aargau

Reference household: 4'500 kWh per year, 4 kWc of panels, a 5 kWh battery capped at 600 W. Hour-by-hour simulation over the year, cell ageing included.

CHF 215.–

The first year

CHF 1'972.–

Over ten years

37 % without a battery, 67 % with one

Share of solar power used on site

Redo the calculation with your own consumption and your own commune

The 94 grid operators in the territory

It is the grid operator that buys your surplus, and it is the grid operator you notify before commissioning. The feed-in tariff changes from one operator to another, sometimes twofold within a single canton.

Grid operator	Communes served	Feed-in tariff
AEW Energie AG	74	8.2 ct published tariff
Eniwa AG	15	8 ct published tariff
IBB Strom AG	7	8 ct estimate
EWS Energie AG	6	8 ct estimate
Elektra Mettauertal und Umgebung Genossenschaft (EMU)	5	8 ct estimate
Energie Oberes Fricktal AG	4	8 ct estimate

and 88 other grid operators

Operators marked as an estimate have no feed-in tariff that we were able to record. For them we use the median of those we have verified, never the legal floor of 6 ct: a floor would flatter the calculation by inflating the gap, and therefore the case for the battery.

And if you live in Aarau itself

In the city of Aarau 21.37 ct

Median for the canton of Aargau 22.15 ct

Aarau is served by Eniwa AG. The rest of the canton is not entirely served by it, and the feed-in tariff changes with the operator — that is what moves the value of a stored kilowatt-hour from one commune to another. The table above gives the detail.

What electricity costs, commune by commune

From 21.65 ct in Sisseln up to 42.86 ct in Murgenthal.

Median : 30.15 ct

The detail for the city of Aarau

ElCom category	Typical consumption	Price incl. VAT
H1	Appartement de 2 pièces, cuisinière électrique	35.63 ct
H2	Appartement de 4 pièces, cuisinière électrique	32.12 ct
H3	Appartement de 4 pièces avec chauffe-eau électrique	28.45 ct
H4	Appartement de 5 pièces, cuisinière et sèche-linge	29.37 ct
H5	Maison de 5 pièces avec chauffe-eau électrique	27.21 ct
H6	Maison de 5 pièces avec chauffage électrique	24.87 ct
H7	Maison de 5 pièces avec pompe à chaleur	26.53 ct
H8	Grand appartement en propriété, fortement électrifié	28.08 ct

The higher your tariff, the more a battery earns: every kilowatt-hour kept is a kilowatt-hour you do not buy.

What panels produce here

From 1'040 kWh in Densbüren up to 1'128 kWh in Sisseln, per kilowatt-peak per year. The gap comes from altitude and above all from the terrain: a valley floor loses hours of sunshine that a hillside keeps.

PVGIS hourly series for the centre of each commune: roof tilted 30° due south, system losses of 14 %, terrain shading taken into account.

What you have to do to install one

Nothing to request, but a notification to file

A battery that plugs into a socket is still subject to written notification to the grid operator before commissioning — here, AEW Energie AG. This is not an authorisation to obtain: it is information to pass on. The pre-filled form ships with the battery.

600 W on delivery, without an electrician

Batteries are capped at 600 W in the factory, the limit of the Swiss plug & play regime. At that level, installation requires no professional: a domestic socket is enough and the distribution board is left untouched.

Up to 2500 W with an approved electrician

In a fixed installation, an approved electrician removes the cap, notifies the grid operator and issues the safety report. The battery then covers far more than standby appliances.

The batteries available in Aargau

Delivery throughout Switzerland, declaration of conformity and notification form supplied. Your meter compatibility is verified before dispatch.

See the batteries Choose the right battery

Out of stock

Tell me when it’s back

Leave your address and you will hear from us the day ce modèle is available again, before it goes back on the site.